Vista - RE: VMs don't start ANY services after mig. from XenServer to Hyper-V

12-01-2008

Meanwhile our external IT service provider (thanks, Gerd!) identified the
cause of the problem:

It is the Disk Virtual Machine Bus Acceleration Filter Driver. AFAIK its
purpose is to directly connect the disk drivers in the child partition to the
VMbus, otherwise they would need to use slower emulated virtual devices. The
driver is part of the Hyper-V Integration Components.

When I disable all instances of the driver using Device Manager, the
machines boot up fast and boot all services, as they should.

The Driver Version is 6.0.6001.18016, Driver Date: 2006-06-21. Maybe they
are from the old Virtual Server and aren't yet optimized for Hyper-V!?

They consist of these files:

Virtual Storage Filter Driver
storflt.sys
6.0.6001.18016
vistasp1_gdr_vm_rtm.080611-0040 (looks new!?)

Hyper-V Integration Components Coinstaller
VmdCoinstall.dll
6.0.6001.18016
vistasp1_gdr_vm_rtm.080611-0040

So far disabling the drivers is only a workaround, costing much performance.

I hope, the Hyper-V-Team will find a solution / bugfix.

However, I still wonder that nothing can be found on the Web about the
symptom of this problem that not a single service is started during booting
of these VMs.

Such a symptom (with any other causes) must have been observed in past!?

L.

"asklucas" wrote:

Quote:

>
> Hi Folks,
>
> I'm using XenServer 4.x for almost a year now but want to migrate to Hyper-V
> RTM for a number of reasons.
>
> Moving the VMs (W2k3 R2 SP2) from XenServer to Hyper-V works well, different
> methods are possible (SC VMM 2008 Beta P2V, Ghost Corp. Edition, other tools).
>
> However, the migrated VMs boot enormously slow on Hyper-V. It takes 30
> minutes to hours until the logon screen, again 30 minutes to hours until
> logon completes. However, explorer.exe doesn't start. In taskmgr.exe and
> compmgmt.msc I can see, that not a single service was started, not even
> eventlog!
>
> I haven't found any information on the web with a similar behaviour of
> Windows! It seems it never happened before on Windows, that not a single
> service starts!
>
> The issue is reproducible using clean installs of XenServer, creating a
> clean W2k3 VM and XenTools and then moving it to a clean install of Hyper-V.
>
> Any clue how to troubleshoot this?
>
> Thanks in advance!
>
> L.
>

12-01-2008	#1 (permalink)
asklucas n/a posts	RE: VMs don't start ANY services after mig. from XenServer to Hyper-V Meanwhile our external IT service provider (thanks, Gerd!) identified the cause of the problem: It is the Disk Virtual Machine Bus Acceleration Filter Driver. AFAIK its purpose is to directly connect the disk drivers in the child partition to the VMbus, otherwise they would need to use slower emulated virtual devices. The driver is part of the Hyper-V Integration Components. When I disable all instances of the driver using Device Manager, the machines boot up fast and boot all services, as they should. The Driver Version is 6.0.6001.18016, Driver Date: 2006-06-21. Maybe they are from the old Virtual Server and aren't yet optimized for Hyper-V!? They consist of these files: Virtual Storage Filter Driver storflt.sys 6.0.6001.18016 vistasp1_gdr_vm_rtm.080611-0040 (looks new!?) Hyper-V Integration Components Coinstaller VmdCoinstall.dll 6.0.6001.18016 vistasp1_gdr_vm_rtm.080611-0040 So far disabling the drivers is only a workaround, costing much performance. I hope, the Hyper-V-Team will find a solution / bugfix. However, I still wonder that nothing can be found on the Web about the symptom of this problem that not a single service is started during booting of these VMs. Such a symptom (with any other causes) must have been observed in past!? L. "asklucas" wrote: Quote: > > Hi Folks, > > I'm using XenServer 4.x for almost a year now but want to migrate to Hyper-V > RTM for a number of reasons. > > Moving the VMs (W2k3 R2 SP2) from XenServer to Hyper-V works well, different > methods are possible (SC VMM 2008 Beta P2V, Ghost Corp. Edition, other tools). > > However, the migrated VMs boot enormously slow on Hyper-V. It takes 30 > minutes to hours until the logon screen, again 30 minutes to hours until > logon completes. However, explorer.exe doesn't start. In taskmgr.exe and > compmgmt.msc I can see, that not a single service was started, not even > eventlog! > > I haven't found any information on the web with a similar behaviour of > Windows! It seems it never happened before on Windows, that not a single > service starts! > > The issue is reproducible using clean installs of XenServer, creating a > clean W2k3 VM and XenTools and then moving it to a clean install of Hyper-V. > > Any clue how to troubleshoot this? > > Thanks in advance! > > L. >
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